Portion of a LED bulb



FIG. 1 is a perspective view of my design;

FIG. 2 is a side elevational view of the design;

FIG. 3 is a top plan view of the design; and,

FIG. 4 is a bottom view of the design.

The portion of a LED bulb depicted in broken lines forms no part of theclaimed design.

CLAIM The ornamental design for a portion of a LED bulb, as shown anddescribed.